S’mores Mug Cake

This S’mores Mug cake makes a fun, single-serving dessert that cooks in just one minute in the microwave. It’s a graham cracker flavored cake, mixed with melted chocolate and topped with torched marshmallows.

I woke up the other morning craving a S’mores Mug Cake. The hot weather seems to have hit early this year and the summer weather had me in the mood for making s’mores. We didn’t actually make any. I need to throw a summer party soon so I can have an excuse to roast S’mores over an open fire. But until then, this S’mores mug cake will do nicely.

The torched marshmallows melted lightly over the surface of the still warm cake, creating a marshmallow-like frosting. The cake itself has graham crackers in two forms: powdered and crumbled. And I stirred in some chocolate discs for the full melted chocolate effect. It’s a sweet, gooey, melty dessert–much like the original.

S'mores Mug Cake


  • 3 1/2 tbsp all purpose flour
  • 2 tbsp powdered graham crackers (you can powder the graham crackers by hand or through a food processor)
  • 1/4 tsp baking powder
  • 1 tbsp vegetable oil
  • 3 tbsp low fat milk
  • 1 tbsp granulated sugar
  • 1 tbsp graham cracker crumbles (see photo above for reference)
  • 1 1/2 tbsp one inch chocolate discs, halved (I used Hershey's chocolate melts; cut the chocolate discs in half before measuring out 1 1/2 tbsp)
  • 3 large torched marshmallows


1. Combine flour, powdered graham crackers, baking powder, oil, milk and sugar into a microwave safe mug at least 8 oz in size. Mix with a small whisk until no flour chunks remain. Stir in graham cracker crumbles and 1 tbsp of chocolate disc halves. Add remaining chocolate discs on top of the batter. Cook in microwave for about 1 minute. Top of cake should look done and surface of cake should be dry rather than gooey.

2. Torch marshmallows with a kitchen torch and add on top to the still-warm cake, pushing down slightly so that the marshmallows partially melt onto the cake surface. Serve immediately.

All images and content are © Kirbie's Cravings.

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